Perinone dyestuffs

ABSTRACT

PERINONE DYESTUFF WHICH IS FREE FROM ABY SULPHONIC ACID GROUPS AND CORRESPONDS TO THE GENERAL FORMULA:   9-(R-CO-),(X)N-PHTHALOPERIN-12-ONE   IN WHICH R DENOTES A RADICAL OF AN OPTIONALLY SUBSTITUTED CYCLIC AMINE, X STANDS FOR HALOGEN, AND N REPRESENTS 0, 1 OR 2 AS WELL AS THEIR PRODUCTION AND USE FOR THE DYEING AND PRINTING OF HYDROPHOBIC FIBRE MATERIALS.

ABSTRACT OF THE DISCLOSURE Perinonedyesituff 'which is free from any sulphonic acid groups and corresponds to'the general formula:

in which R denotes a radical of an optionally substituted cyclic amine,

X stands for halogen, and

n represents 0, 1 or 2 as well as their production and use for the dyeing and printing of hydrophobic fibre materials.

The subject-matter of the present invention comprises new perinone dyestufifs which are free from sulphonic acid groups and correspond to the formula in which R d e'notes the'radicalof a cyclic amine, X stands for halogen, and'n represents a number from to 2,

as well as their production and their use for the dyeing of hydrophobic fibre materials.

- In formula (I), 'R preferably stands for radicals of 5- to 7-membered cyclic amines from the series of pyrrolidines,= .pip'eridines, hexamethylene-imines, morpholines, thiomorpholines and thiomorpholine dioxides. The radicals of these heterocycles may be substituted by halogen, C -C -alkyl or C -C;,--alkoxy groups. Suitable radicals R are,ifor example:

pyrrolidinyl, 2-methyl-pyrrolidinyl, 2-chloropiperidinyl, 2,6-dimethyl-piperidinyl, Z-ethOXy-piperidinyl, 2-methylmorpholinyl, Ii-methyl-thiomorpholinyl and others.

Chlorine and bromine are -1particularly suitable halogen atoms X.

The new dyestuffs (I) are obtained by reacting carboxylic acid halides of the formula (II) 3,833,583 Patented Sept. 3, 1974 in which Z denotes a halogen atom, preferably chlorine, with cyclic amines, preferably in the presence of acidbinding agents and of anhydrous inert solvents, at elevated temperatures.

The carboxylic acid halides (11) used as starting material are known in part (see e.g. US. Patent Specification No. 3,342,818).

The acid halides (II) to be used according to the invention are obtained in known manner by condensing trimellitic acid or its functional derivatives, preferably the anhydride, with the appropriate 1,8-naphthylene-diamines in nitrobenzene, N-methyl-pyrrolidone or chlorinated aromatic hydrocarbons as solvents, at to 240 C., preferably at -200 C., to form the free perinone-carboxylic acids, and converting the latter in the usual way by means of acid-halogenating agents, such as thionyl chloride or phosgene, into the corresponding acid halides (II).

Suitable 1,8-naphthylene-diamines are, for example, 1, I

S-naphthylene-diamine, 2-chloro-1,8-naphthylene-diamine, 2-bromo-1,8-naphthylene-diamine, 2,4-dichloro- 1,8-naphthylene-diamine, 2,4 dibromo-l,8-naphthylene diamine. The carboxylic acid halides (II) may be used in pure crystalline form; according to a particular method of execution, the process of the invention for the preparation of the dyestuffs (I) can also be carried out as a single pot reaction by converting the perinone-carboxylic acids in an inert solvent with, for example, SOCl or COCl into the acid chlorides and reacting the latter, without isolation and after driving off the volatile reaction products by means of dry air or pure nitrogen and possibly with the addition of acid acceptors, in the same vessel with the cyclic amines to be used according to the invention.

Suitable cyclic amines are, for example:

pyrrolidine, 3,4-dichloro-pyrro1idine, 3,4-dibromo-pyrrolidine, 2-methyl-pyrrolidine, 3-methyl-pyrrolidine, 2,3-dimethyl-pyrrolidine, 3,4dimethyl-pyrrolidine, 2,5 -dimethy1-pyrrolidine, 2-chloro-piperidine, piperidine, 3-chloro-piperidine, 4-chloro-piperidine, 2-bromo-piperidine, 3-bromo-piperidine, 4-bromo-piperidine, Z-methyl-piperidine, S-methyl-piperidine, 4-methyl-piperidine, 2-ethyl-piperidine, 3-ethyl-piperidine, 4-ethyl-piperidine, 2,4-dimethyl-piperidine, 2,5 -dimethyl-piperidine, 2,6-dimethyl-piperidine, 2-methyl-S-ethyl-piperidine, 2-methoxy-piperidine, 3-methoXy-piperidine, 4-methoxy-piperidine, 2-ethoXy-piperidine,

3 ethoXy-piperidine, 4-ethoxy-piperidine, hexamcthylene-imine, morpholine, Z-methyl-morpholine, 3-methyl-morpholine, 2,3-dimethyl-morpholine, 2,6-dimethyl-morpholine, thiomorpholine,

3 Z-methyl-thiomorpholine, B-methyl-thiomorpholine, 2,3-dimethyl-thiomorpholine, 2,S-dimethyl-thiomorpholine, 2,6-dimethyl-thiomorpholine, thiomorpholine dioxide, Z-methyl-thiomorpholine dioxide, 3-methyl-thiomorpholine dioxide, 2,3-dimethyl-thiomorpholine dioxide, 2,5-dimethyl-thiomorpholine dioxide, 2,6-dimethyl-thiomorpholine dioxide.

Suitable inert solvents are dioxan, toluene, tetraline, chlorobenzene, o-dichlorobenzene, trichlorobenzene, nitrobenzene, dimethyl-aniline, pyridine or quinoline.

Suitable acid-binding agents are sodium acetate, pyridine, picoline, quinoline, triethylamine and dirnethylaniline.

The condensation temperatures may be varied within a fairly wide range. In general, the process is carried out at temperatures from 60 to 220 0., preferably at 50-l20 C.

The procedure for preparing the new dyestuffs expediently consists in adding to a solution or suspension of an acid halide in a suitable anhydrous solvent, preferably in the presence of at least 1 equivalent of an acid acceptor, at temperatures of 60-100 C., dropwise at least about 1 equivalent of one of the aforesaid cyclic amines; then stirring for 1 to 3 hours at temperatures which may be raised to not more than 220 C.; evaporating part of the solvent in a vacuum, if desired; cooling to room temperature; filtering off the precipitated dyestuff with suction; washing with a little light petroleum or alcohol and then with water optionally containing a small amount of an emulsifier; and drying.

When the dyestufis so obtained have been finely divided, they are eminently suitable for the dyeing and printing of hydrophobic synthetic fibre materials, such as polyester fibres, especially polyethylene terephthalate fibres or fibres of condensation products from bis-hydroxymethylcyclohexane and terephthalic acid, as well as fibres of cellulose triacetate or polyolefines and superpolyamides and -urethanes. They can also be used for the dyeing of polyester fibres according to the so-called thermosol process.

Dyeings of outstanding fastness properties, especially very good fastness to light, sublimation and rubbing, are obtained on the said materials according to the usual dyeing methods for these materials.

The parts given in the following Examples mean parts by weight.

Example 1 158 parts 1,8-naphthylene-diamine are mixed in 1000 parts 1,2,4-trichlorobenzene with 192 parts trimellitic acid anhydride and the mixture is heated at boiling temperature until 36 parts of water have distilled over via a distillation head. The mixture is then allowed to cool to about 160 C., and 119 parts thionyl chloride are added dropwise. The temperature is raised to boiling temperature, and the darkred reaction mixture is kept boiling under reflux for 2 hours. The heating is then turned off and a current of dry air is passed through the reaction mixture until the gaseous hydrochloric acid liberated in the course of the acid chloride formation has been driven 01f. The temperature of the reaction mixture is allowed to fall to 100 C.

150 parts piperidine are added dropwise, and stirring is continued at 100 C. for 2 hours. About 500 parts trichlorobenzene are then distilled off in a water jet vacuum, the residue after distillation is cooled to room temperature, and the precipitated dyestuif is filtered off with suction. The dyestulf is washed with light petrol and then with water to which 13% of an emulsifier have been '4 i f i added, and dried. The yield amounts to 305 g. of a n orange-red dyestutf of the following constitution:

which, when finely divided, dyes polyester fibres by the usual dyeing methods in brilliant orange shades.. s.flhe dyeings are characterised by outstanding fastness to light, very good fastness to sublimitation and good fastness to i'ubhing Instead of pyridine, the following amines can be reacted in the same way to form analogous dyestuffs which likewise dye polyester or polyamide fibres in orange shades of very good fastness properties:

Example 2 p 158 parts 1,8-naphthylene-diamine are mixed in 1000 parts o-dichlorobenzene with 192 parts trimellitic acidanhydride, and the mixture is heated at boiling temperature until 36 parts of water have distilledov'eif via a distillation head. The mixture is then allowed to'cool to 160 C., 119 parts thionyl chloride are added dropwise; the temperature is raised to boiling .point, and the mixture :is kept boiling under reflux fo-r-2 hours. 500 parts a-dichlorobenzene are then distilled off,.the residue after distillation is cooled to room temperture, and the-crystallized dark-red dyestuff carboxylic acid chloride isfiltered' off with suction, washed with light petrol and dried. .1 1 1.

The acid chloride is heated in: 2200'parts tetrachloro ethylene to 0., mixed with 80 parts pyridine and '90 parts morpholine, and the mixture is boiledunder reflux for 2 hours. It is then cooled to room temperature, the orange-red dyestufi is filtered 01f with suction',="intensely washed with hot water,,and dried. A dyestulf. of e following constitution:

is obtained in a high yield; when finely divided, it dyes polyester fibres by the usual dyeing methods in brilliant orange shades. The dyeings are characterised by outstanding fastness to light, very good fastness to sublimation and good fastness to rubbing.

Example 3 The procedure described in Example 2 is followed, but the 1,8-naphthylene-diamine is replaced with its 2-chloro derivative (192.5 parts).

A dyestuif is obtained whose outstanding dyeing properties are similar to those of the dyestuffs described in Example 2.

Equally good results are achieved with the use of the following naphthylene-diamines: 237 parts 2-bromo-1,8- naphthylene-diamine, 227 parts 2,4-dichloro-1,8-naphthylene-diamine or 316 parts 2,4-dibromo-1,8-naphthylenediamine.

Dyeing Example 25 parts of the orange dyestufi' obtained according to Example 1 are ground with 75 parts of a condensation product from B-naphthalenesulphonic acid and formaldehyde and with 120 parts of water in a ball mill for 24 hours. This paste is subsequently dried in a vacuum at 50 C. and the residue is finely ground.

1 part of this dyestufi powder is stirred into 2000 parts of hot Water which contains 8-10 parts of a carrier, e.g. o-phenyl-phenol, and which has been adjusted to a pH value of appr. 4.5 with the aid of sulphuric acid. There is obtained a very fine dyestufi suspension into which 50 parts of polyester fibres are introduced at 40-60 C. The dyebath is heated to boiling temperature within 20 minutes and kept at the same temperature for 1 to 1 /2 hours. The dyed material is subsequently thoroughly rinsed with water and dried. A clear orange dyeing of outstanding fastness to light and very good fastness to sublimation and rubbing is obtained.

6 What we claim is: 1. Perinone dyestutf of the formula:

2. Perinone dyestufi of Claim 1 in which R is pyrrolidino, Z-methyl-pyrrolidino, 2-chloropiperidino, 2,6-dimethylpiperidino, 2 ethoxypiperidino, 2 methylmorpholino, or 3-methylthiomorpholino.

3. Perinone dyestufi of the formula:

References Cited UNITED STATES PATENTS 3,544,573 12/ 1970 Christmann 260-256.4 Q

RICHARD J. GALLAGHER, Primary Examiner US. Cl. X.R.

260-40, 243 R, 243 A, 247.2 A, 251 A 

